Combustor and stove

Abstract

The technical scheme belongs to the field of stove combustors. The stove combustor comprises a base, a flame projector arranged on the base and a combustion disc arranged on the flame projector. The base is provided with a gas inlet channel communicated to the flame projector, the gas inlet channel comprises a gas inlet used for providing gas, an air inlet used for providing air and a gas mixing cavity, an installation cavity is further formed in the gas inlet channel, an injection pipe is arranged in the installation cavity in a split mode, the injection pipe is provided with a mixing channel, and the mixing channel is communicated with the gas inlet. One end of the mixing channel is communicated with the gas mixing cavity, the other end of the mixing channel is communicated with the flame projector, the mixing proportion of oxygen and fuel gas is increased through the structural design of the mixing channel, and therefore the combustion efficiency of mixed gas is improved; and the injection pipe is conveniently mounted in the mounting cavity to be fixed after being precisely machined, so that the precision of the injection pipe is improved.

Description

Technical Field

[0001] The present technical solution relates to the technical field of cooking appliance burners, and particularly refers to a burner and a cooking appliance. Background Art

[0002] A cooking appliance burner is a device that allows fuel and air to be ejected and mixed in a certain way for combustion. It is a key component in a cooking appliance, responsible for mixing and igniting gas and air to generate a flame for heating. Existing burners are generally mainly divided into upward air intake burners or burners and cooking appliances. The characteristic of burners and cooking appliances is that the air required for combustion enters the interior of the burner through the bottom of the chassis and then mixes with the gas.

[0003] For example, in Chinese Patent CN107461741A, the patent discloses a burner and a gas stove. The burner includes an outer ring ejector tube, an inner ring ejector tube, and an inner ring oxygen supply channel. An inner ring air outlet for supplying gas to the inner ring burner cap is provided on the burner head base. The inner ring ejector tube is connected to the inner ring air outlet. The inner ring oxygen supply channel is arranged inside the inner ring air outlet, and the lower end of the inner ring oxygen supply channel communicates with the external environment. Two outer ring ejector tubes are symmetrically arranged on both sides of the inner ring ejector tube, making the output speed of the gas more uniform.

[0004] Both the outer ring ejector tube and the inner ring ejector tube of the above-mentioned burner adopt a Venturi structure. The main principle of the Venturi structure is to utilize the structure of the inner wall of its own pipe that first contracts and then gradually expands, so as to generate a negative pressure near the high-speed flowing gas, thereby being able to effectively adsorb air and increase the mixing ratio of oxygen and gas.

[0005] The existing ejector tubes and burner head bases are both integrally formed structures, mainly manufactured through casting processes and secondary processing processes. At present, the processing accuracy of the casting process cannot be further improved, and the secondary processing process is restricted by the complex structure of the burner head base, making it difficult to process. As a result, the inner wall accuracy of the ejector tubes is uneven, resulting in low accuracy of the ejector tubes, and the mixing effect of gas and air not reaching the expected level, leading to incomplete combustion and relatively low thermal efficiency. Summary of the Invention

[0006] The present technical solution provides a burner and a cooking appliance in order to improve the problem of poor internal processing accuracy in the case of an integral structure of the ejector tube.

[0007] The purpose of the present technical solution is achieved as follows:

[0008] A burner includes a base, a burner on the base, and a combustion disk on the burner. The base is provided with an air intake passage communicating with the burner. The air intake passage includes a gas intake port for supplying gas, an air intake port for supplying air, and a mixing chamber;

[0009] An installation cavity is also provided on the intake passage. An ejector tube is separately arranged in the installation cavity. The ejector tube has a mixing channel. One end of the mixing channel communicates with the gas mixing cavity, and the other end communicates with the flamethrower.

[0010] Through the above technical solution, when the burner is in normal use, the air intake is communicated with the gas mixing cavity. Since the air intake is provided on the lower end surface of the base, after the base is installed, there is enough space between the air intake and the cooking surface for air circulation, so as to fully supplement the air introduced into the gas mixing cavity from the outside. An ejector tube with a suitable size is installed in the installation cavity on the intake passage. The ejector tube adopts a Venturi structure. The gas inlet faces the ejector tube to input gas. The gas and air enter the gas mixing cavity and then pass through the mixing channel. The design of the mixing channel structure improves the mixing ratio of oxygen and gas, thereby improving the combustion efficiency of the mixed gas. Based on the fact that the ejector tube and the base adopt a split structure, the inner wall of the mixing channel of the ejector tube is processed separately, which is convenient for the ejector tube to be installed and fixed in the installation cavity after being precisely processed, thereby improving the accuracy of the ejector tube.

[0011] Preferably, the base is provided with fastening members, and the ejector tube is fixed in the installation cavity through the fastening members.

[0012] Through the above technical solution, the ejector tube is detachably fixed to the base by adjusting the fastening members. When the fastening members are adjusted to lock the ejector tube, the ejector tube is fixed and positioned in the installation cavity, improving the stability of use. When the fastening members are adjusted to release the ejector tube, the ejector tube can be removed for easy replacement and maintenance.

[0013] Preferably, the ejector tube can be axially adjusted relative to the installation cavity for adjusting the ratio of gas and air in the gas mixing cavity.

[0014] Through the above technical solution, in actual use, different gas sources have different requirements for the air ratio. The ejector tube is set to be axially adjustable relative to the installation cavity. By axially adjusting the ejector tube, the ratio of gas and air in the gas mixing cavity is adjusted. When the ejector tube is adjusted closer to the gas inlet, the distance between the ejector tube and the gas inlet is shortened, so that the amount of air that the gas inlet can carry with the same gas input decreases, and the air ratio decreases, which is suitable for gas types with less air consumption per unit volume; on the contrary, it is suitable for gas types with more air consumption per unit volume, making the mixing effect of different gas and air ratios better, realizing more complete fuel combustion, and improving applicability.

[0015] Preferably, the cross-sectional areas of the gas inlet and the gas mixing cavity are both greater than or equal to the cross-sectional area of the installation cavity and are arranged in alignment, so that the ejector tube can be installed in the installation cavity after passing through the gas inlet and the gas mixing cavity;

[0016] Alternatively, a through hole is formed in the base, and a plug is provided in the through hole.

[0017] Through the above technical solution, the gas inlet and the mixing chamber are arranged in alignment with the installation chamber, so that a through channel is formed in sequence among the three. Based on the fact that the cross-sectional areas of the gas inlet and the mixing chamber are larger than that of the installation chamber, the ejector tube extends from the gas inlet into the mixing chamber and then enters the installation chamber through the mixing chamber, thereby realizing the installation of the ejector tube in the installation chamber and improving convenience.

[0018] Preferably, the burner disc includes an outer fire cover and an inner fire cover;

[0019] The air inlet channel includes an outer air inlet channel communicating with the outer fire cover.

[0020] Through the above technical solution, the outer fire cover and the inner fire cover form a burner disc to ensure uniform heating, perform multi-point and multi-level heating on the bottom of the pot, effectively avoid the situation that heat is concentrated in a certain part of the bottom of the pot, increase the flame coverage area, and achieve different heating effects respectively. The outer air inlet channel in the air inlet channel communicates with the inner fire cover, and the outer air inlet channel correspondingly provides mixed gas for the outer fire cover.

[0021] Preferably, the inner air inlet channel further includes an inner air inlet channel communicating with the inner fire cover.

[0022] Through the above technical solution, the outer air inlet channel and the inner air inlet channel are arranged corresponding to the outer fire cover and the inner fire cover respectively. Both the outer air inlet channel and the inner air inlet channel have a gas inlet, so that the air inlet channel includes two independent mixed gas delivery channels to avoid mutual influence and improve applicability.

[0023] Preferably, an inner air inlet channel communicating with the inner fire cover is formed in the base;

[0024] An inner air inlet is formed between the base and the burner. A plurality of inner air inlets are distributed along the circumference of the base. The inner air inlets lead to the inner fire cover and are used to provide air.

[0025] Through the above technical solution, an inner air inlet channel is formed in the base. The inner air inlet channel is a branch of the inner air inlet channel that communicates with the inner fire cover. The inner air inlet channel and the outer air inlet channel share the same gas inlet.

[0026] A plurality of inner air inlets are formed between the base and the burner, which are used to supplement air to the inner fire cover, making the air supplemented to the inner fire cover more sufficient, capable of improving the combustion efficiency, enabling the gas to burn fully, and thereby reducing carbon monoxide emissions.

[0027] Preferably, the air inlet comprises an external air inlet connected to the air mixing chamber, and a monitoring hole is provided on the inner wall of the air mixing chamber on a side opposite to the external air inlet;

[0028] An embedding groove is provided on the upper end surface of the base at a side away from the gas mixing chamber, and a baffle is installed in the embedding groove. The baffle is used to cover the monitoring hole.

[0029] Through the above technical solution, the monitoring hole and the external air inlet are respectively connected to the opposite end faces of the mixing chamber, and the baffle is embedded in the matching groove. The baffle covers the monitoring hole to limit the passage of gas. When it is necessary to detect the air tightness or the use status of the gas nozzle, the baffle is removed from the groove, and the monitoring hole is opened. The internal situation of the mixing chamber can be directly observed through the detection hole without removing the entire base. By facilitating the adjustment of the position of the ejector tube, maintenance and detection are simpler and more efficient, thereby improving safety.

[0030] Preferably, the outer fire cover has a plurality of outer fire holes, the inner fire cover has a plurality of inner main fire holes and inner flame stabilizing holes, each of the inner flame stabilizing holes is distributed one by one between two adjacent inner main fire holes, and the plurality of inner main fire holes and the inner flame stabilizing holes are formed in two rows;

[0031] The outer fire hole, the inner main fire hole and the inner flame stabilizing hole are inclined outwardly and upwardly at an angle of 27°-37° relative to the inner fire cover.

[0032] Through the above technical scheme, the outer fire holes are arranged on the outer fire cover along the circumferential direction to make the flame more uniform and stable, thereby improving the cooking effect. An inner flame-stabilizing hole is added between every two horizontally adjacent inner main fire holes, so that a number of inner main fire holes and a number of inner flame-stabilizing holes are arranged in sequence along the circumferential direction and arranged into two rows of holes, which helps to achieve a more uniform flame distribution and improve the thermal efficiency of the burner.

[0033] The outer fire hole, inner main fire hole and inner flame stabilizing hole are tilted, and the tilt angle is limited to a certain range of 27°-37, so that the inner and outer fire holes both fire at an upward angle, achieving a close fit between the flame and the bottom of the pot. The upward angle setting of the flame stabilizing hole makes the inner main fire hole more stable, thereby improving the combustion efficiency and stability of the flame.

[0034] A stove comprises a stove panel and at least one burner as described above.

[0035] Through the above technical solution, the pot is placed on the bracket of the stove panel, and the position of the pot is directly above the burning plate, ensuring that the flame can stably act on the pot to achieve a good cooking effect.

[0036] Compared with the prior art, the technical solution has the following outstanding and beneficial technical effects:

[0037] 1. This technical solution installs a matching ejector tube in the installation cavity. The ejector tube and the base are separated into a structure, which facilitates the ejector tube to be accurately processed separately and then installed, thereby achieving better processing accuracy;

[0038] 2. This technical solution can adjust the ratio of gas and air in the gas mixing chamber through the ejector tube, which can be adjusted axially relative to the installation chamber. It is suitable for gas types with different air consumption per unit volume, and improves the mixing ratio of mixed gas for different types, so as to achieve more complete combustion of fuel and improve applicability.

[0039] 3. This technical solution forms a plurality of internal air inlets between the base and the flamethrower, so that the air supplied to the internal fire cover is more sufficient, so that the gas is fully burned, and the combustion efficiency is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0041] Figure 2 It is a partial cross-sectional schematic diagram of this embodiment;

[0042] Figure 3 It is a partial explosion schematic diagram of this embodiment;

[0043] Figure 4 Schematic diagram of the overall structure of the base in this embodiment.

[0044] Figure numerals: 1. base; 2. flamethrower; 3. combustion disk; 31. outer fire cover; 32. inner fire cover; 4. outer air intake channel; 5. inner air intake channel; 6. mounting cavity; 7. ejector tube; 8. mixing channel; 9. outer fire hole; 10. inner main fire hole; 11. mixing cavity; 12. outer air inlet; 13. monitoring hole; 14. embedded groove; 15. baffle; 16. toothed portion; 17. inner air inlet; 18. inner flame stabilizing hole; 19. gas inlet; 23. fastener; 24. through hole; 25. plug. DETAILED DESCRIPTION

[0045] The specific implementation of the technical solution is further described in detail below with reference to the accompanying drawings.

[0046] Embodiment 1:

[0047] See also Figure 1 A burner includes a base 1, a flamethrower 2 and a combustion plate 3. The base 1 can be installed on a stove panel, the flamethrower 2 is fixed above the base 1, and the combustion plate 3 is located on the side of the flamethrower 2 away from the base 1. The combustion plate 3 includes an outer fire cover 31 and an inner fire cover 32. The outer fire cover 31 is annular and located on the outside of the inner fire cover 32.

[0048] The outer burner cap 31 has a plurality of outer flame holes 9, and the plurality of outer flame holes 9 are arranged at intervals along the circumferential direction of the outer burner cap 31. The fire outlet ends of the outer flame holes 9 are all arranged outward relative to the outer burner cap 31. In this embodiment, 44 outer flame holes 9 are shown, and some adjacent outer flame holes 9 are arranged at intervals of 7.5° in the circumferential direction.

[0049] Two rows of hole positions are formed along the circumferential direction on the outer circumferential wall of the inner burner cap 32. The two rows of hole positions are combined by a plurality of inner main flame holes 10 and a plurality of inner flame stabilizing holes 18. The fire outlet ends of each inner main flame hole 10 and inner flame stabilizing hole 18 are both arranged outward relative to the inner burner cap 32. Each inner flame stabilizing hole 18 in each row of hole positions is distributed one by one between two adjacent inner main flame holes 10. In this embodiment, it is shown that there are 20 groups of an inner main flame hole 10 corresponding to an inner flame stabilizing hole 18 arranged vertically up and down, and each adjacent two groups are evenly distributed at an interval of 18° along the circumferential direction of the inner burner cap 32.

[0050] The channels of the outer flame holes 9, inner main flame holes 10 and inner flame stabilizing holes 18 all have an inclination angle, and the inclination angles are all arranged outward and inclined upward, so that each flame hole discharges fire at an elevation angle. The inclination range of the inclination angle is a, and a is 27° - 37°. In this embodiment, the inclination angles of the outer flame holes 9, inner main flame holes 10 and inner flame stabilizing holes 18 are shown to be 32°, so that the flame closely adheres to the bottom of the cookware.

[0051] See Figure 1 and Figure 2 , the base 1 is provided with an air intake passage communicating with the burner 2. The air intake passage includes a gas intake port 19 for supplying gas, an air intake port for supplying air, and a mixing chamber 11. Among them, the air intake passage includes an outer air intake passage 4 and an inner air intake passage 5. One end of the outer air intake passage 4 communicates with the inner and outer burner caps 31, and one end of the air intake passage 5 communicates with the inner burner cap 32. The outer air intake passage 4 and the inner air intake passage 5 are separated from each other and do not communicate with each other. Both the outer air intake passage 4 and the inner air intake passage 5 have a gas intake port 19, and the two gas intake ports 19 can be connected to two gas output joints divided from the same gas source. Alternatively, the two gas intake ports 19 can be connected to two different gas sources to supply different gases.

[0052] A plurality of inner air inlets 17 are formed between the base 1 and the burner 2. There are three inner air inlets 17, and the three inner air inlets 17 are correspondingly distributed along the circumferential direction of the base 1. The three inner air inlets 17 cooperate to supply air from the outside to the inner burner cap 32. The sufficient supply of air enables the mixture gas to burn completely, improving the combustion efficiency and thus reducing CO emissions.

[0053] The air inlet includes an external air inlet 12 communicating with the air mixing chamber 11. The external air inlet 12 is opened at the position on the lower end face of the base 1 corresponding to the air mixing chamber 11. The external air inlet 12 fully supplements the air mixed with the gas. The opening of the external air inlet 12 is arranged facing the cooktop panel to avoid being blocked when multiple bases 1 are arranged for use. When gas is input, the gas carries the air at the external air inlet 12.

[0054] See Figure 2 and Figure 4 An installation cavity 6 is also opened on the air inlet passage. In this embodiment, the shown installation cavity 6 is formed in the external air inlet passage 4. One end of the installation cavity 6 communicates with the air mixing chamber 11. An ejector tube 7 is separately arranged in the installation cavity 6. The shape and size of the ejector tube 7 are adapted to the installation cavity 6. The specific installation method of the ejector tube 7 installed in the installation cavity 6 is that the cross-sectional areas of the gas inlet 19 and the air mixing chamber 11 are both greater than or equal to the cross-sectional area of the installation cavity 6, and the gas inlet 19, the air mixing chamber 11 and the installation cavity 6 are all arranged in alignment, so that the ejector tube 7 extends into the air mixing chamber 11 through the gas inlet 19 and then enters the installation cavity 6 through the air mixing chamber 11.

[0055] The base 1 is provided with a fastener 23. The fastener 23 is preferably a fastening screw. The fastener 23 passes through the lower end face of the base 1 and abuts against the outer wall of the ejector tube 7, so that the ejector tube 7 is relatively fixed to the base 1. A mixing passage 8 is provided in the ejector tube 7. One end of the mixing passage 8 communicates with the air mixing chamber 11 and the other end communicates with the burner 2. In this embodiment, the shown ejector tube 7 adopts a Venturi structure. The mixing passage 8 of this structure includes a contraction section, a guiding section and a diffusion section. The contraction section is arranged to gradually shrink towards the guiding section, and the diffusion section is arranged to flare outwards away from the guiding section. The expansion angles of the inlet section and the outlet section are both 3.9°. The Venturi tube is a prior art and will not be elaborated here. This structure effectively increases the air negative pressure and improves the mixing ratio of air and gas.

[0056] The ejector tube 7 is axially adjusted relative to the installation cavity 6. When the fastener 23 is adjusted to release the ejector tube 7, by adjusting the fixed position of the ejector tube 7 along the installation cavity 6, the ratio of gas and air in the air mixing chamber 11 can be adjusted. When the ejector tube 7 is pulled out in the direction towards the gas inlet 19, the distance between the ejector tube 7 and the gas inlet 19 is shortened, so that the amount of air that the gas inlet 19 can carry with the same gas input is reduced and the air ratio drops, which is applicable to the gas type with less air consumption per unit volume; on the contrary, the distance between the ejector tube 7 and the gas inlet 19 is extended, so that the amount of air that the gas inlet 19 can carry with the same gas input is increased and the air ratio rises, which is applicable to the gas type with more air consumption per unit volume, making the mixing effect of different gas and air ratios better, realizing more complete fuel combustion and improving the applicability.

[0057] The ejector tube 7 has a serrated portion 16 formed by a series of protrusions or grooves. The serrated portion 16 is formed on the outer peripheral wall of the ejector tube 7. The serrated portion 16 is located at one end of the ejector tube 7 close to the gas inlet 19. The serrated portion 16 is located within the mixing chamber 11. By applying an outward force to the serrated portion 16, the serrated portion 16 increases the frictional force for pulling out the ejector tube 7.

[0058] See Figure 3 , on the inner wall of the mixing chamber 11 on the side opposite to the external air inlet 12, a monitoring hole 13 is provided. The monitoring hole 13 and the external air inlet 12 are provided in one-to-one correspondence on the opposite end faces of the base 1 along the upper and lower sides. An embedding groove 14 is provided on the upper end face of the base 1 corresponding to the monitoring hole 13. A matching baffle 15 is installed in the embedding groove 14. The baffle 15 is used to cover the monitoring hole 13. When the baffle 15 is removed, the internal situation of the mixing chamber 11 can be conveniently observed through the monitoring hole 13 and it is also convenient for maintenance and replacement.

[0059] In this embodiment, the external air inlet passage 4 is divided into two passages. The flamethrower 2 is provided with two gas passing ports corresponding to the two passages. The two gas passing ports are provided on both sides of the external burner cap 31 in one-to-one correspondence, so that the mixed gas generated in the external air inlet passage 4 through the mixing passage 8 is respectively supplied to the external burner cap 31 by the two gas passing holes, making the supply of the mixed gas faster and more comprehensive.

[0060] The base 1 is provided with a first installation hole and a second installation hole. The first installation hole and the second installation hole are located on both sides of the upper end face of the base 1 corresponding to the internal burner cap 32. The first installation hole is used for installing the igniter, and the second installation hole is used for installing the thermocouple.

[0061] A cooker includes a cooker panel. The cooker panel is provided with a pot support. The pot support is erected above the burner pan. The pot support is used to support the cooking utensil so that the burner pan provides heat to the cooking utensil.

[0062] The specific working process of this solution is as follows:

[0063] In this technical solution, both the external burner cap 31 and the internal burner cap 32 in the burner pan 3 are installed on the flamethrower 2. The externally connected gas is respectively supplied to the corresponding external burner cap 31 and internal burner cap 32 through the external air inlet passage 4 and the internal air inlet passage 5 in the base 1, so that the gas transmission of the external burner cap 31 and the internal burner cap 32 is independent of each other to avoid mutual influence and improve the transmission applicability. An ejector tube 7 with a matching size is installed in the installation cavity 6 in the external air inlet passage 4. The main function of the ejector tube 7 is to eject the air flow to ensure better mixing of the gas and air, and after mixing, the combustion efficiency is improved. The ejector tube 7 and the base 1 are separately arranged, realizing that the ejector tube 7 can be detachably installed on the base 1. The inner wall of the mixing passage 8 of the ejector tube 7 is processed separately, which is convenient for the ejector tube 7 to be accurately processed and then installed and fixed in the installation cavity 6, thereby improving the accuracy of the ejector tube 7.

[0064] Embodiment 2:

[0065] The difference from Embodiment 1 is that the seat body 1 is further provided with a through hole 24. The through hole 24 is located at one end of the seat body 1 opposite to the first air inlet hole 21. A plug 25 is installed in the through hole 24. The plug 25 can block the through hole 24. The through hole 24 is aligned with the installation cavity 6. The cross-sectional area of the channel of the through hole 24 is larger than that of the installation cavity 6. The ejector tube 7 enters the installation cavity 6 through the through hole 24 to achieve installation.

[0066] Embodiment 3:

[0067] The difference from Embodiment 1 is that the base 1 is provided with an internal air inlet channel 5. The internal air inlet channel 5 is communicated with the internal fire cap 32. The internal air inlet channel 5 is communicated with one end of the external air inlet channel 4 far away from the combustion tray 3. The internal air inlet channel 5 and the external air inlet channel 4 share the same gas inlet 19. When gas is input through the gas inlet 19, the gas is respectively supplied to the external air inlet channel 4 and the internal air inlet channel 5 in the air inlet channel. The external air inlet channel 4 and the internal air inlet channel 5 are internally branched relative to the air inlet channel.

[0068] The above shows and describes the basic principles, main features and advantages of the technical solution. Those skilled in the art should understand that the technical solution is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the technical solution. Without departing from the spirit and scope of the technical solution, the technical solution will have various changes and improvements, and these changes and improvements fall within the scope of the technical solution claimed. The scope of protection required by the technical solution is defined by the appended claims and their equivalents.

Claims

1. A burner, comprising a base (1), a flamethrower (2) arranged on the base (1), and a combustion disk (3) arranged on the flamethrower (2), wherein the base (1) is provided with an air intake passage connected to the flamethrower (2), the air intake passage comprising a gas intake port for providing gas, an air intake port for providing air, and a gas mixing chamber, characterized in that: The air inlet passage is also provided with an installation cavity (6), and an ejector tube (7) is separately provided in the installation cavity (6). The ejector tube (7) has a mixing channel (8), one end of the mixing channel (8) is connected to the air mixing cavity, and the other end is connected to the flamethrower (2).

2. The burner according to claim 1, characterized in that: The base (1) is provided with a fastener (23), and the ejector tube (7) is fixed in the installation cavity (6) via the fastener (23).

3. The burner according to claim 1, characterized in that: The ejector tube (7) can be axially adjusted relative to the mounting cavity (6) to adjust the ratio of gas to air in the gas mixing cavity.

4. The burner according to claim 1, characterized in that: The cross-sectional areas of the gas inlet and the gas mixing chamber are both greater than or equal to the cross-sectional area of ​​the installation chamber (6) and are arranged in a corresponding manner, so that the ejector tube (7) can be installed in the installation chamber (6) after passing through the gas inlet and the gas mixing chamber; Alternatively, a through hole (24) is provided on the base (1), and a plug (25) is provided in the through hole (24).

5. The burner according to claim 1, characterized in that: The combustion disk (3) comprises an outer fire cover (31) and an inner fire cover (32); The air intake passage comprises an external air intake passage (4) connected to the external fire cover (31).

6. The burner according to claim 5, characterized in that: The air intake passage also includes an inner air intake passage (5) communicating with the inner fire cover (32).

7. The burner according to claim 5, characterized in that: The base (1) is provided with an inner air intake passage (5) connected to the inner fire cover (32); An internal air inlet (17) is formed between the base (1) and the flamethrower (2), and a plurality of internal air inlets (17) are distributed along the circumference of the base (1). The internal air inlets (17) lead to an internal fire cover (32) and are used to provide air.

8. The burner according to claim 1, characterized in that: The air inlet comprises an external air inlet (12) connected to the air mixing chamber (11), and a monitoring hole (13) is provided on the inner wall of the air mixing chamber (11) on a side opposite to the external air inlet (12); An embedding groove (14) is provided on the upper end surface of the base (1) on the side away from the gas mixing chamber (11), and a baffle (15) is installed in the embedding groove (14). The baffle (15) is used to cover the monitoring hole (13).

9. The burner according to claim 5, characterized in that: The outer fire cover (31) has a plurality of outer fire holes (9), and the inner fire cover (32) has a plurality of inner main fire holes (10) and inner flame stabilizing holes (18), each of the inner flame stabilizing holes (18) being distributed one by one between two adjacent inner main fire holes (10), and the plurality of inner main fire holes (10) and the inner flame stabilizing holes (18) are formed in two rows; The outer fire hole (9), the inner main fire hole (10) and the inner flame stabilizing hole (18) are inclined outwardly and upwardly at an angle of 27°-37° relative to the inner fire cover (32).

10. A cooking appliance, comprising a cooking appliance panel, characterized in that: Also comprises at least one burner according to any one of claims 1 to 9.

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